IonQ Hits 99.99% 2-Qubit Fidelity as Quantinuum Reaches 99.92%
Updated
Updated · The Motley Fool · Jun 25
IonQ Hits 99.99% 2-Qubit Fidelity as Quantinuum Reaches 99.92%
2 articles · Updated · The Motley Fool · Jun 25
Summary
IonQ posted 99.99% 2-qubit gate fidelity, a level the report says can open the door to error-correction work beyond hardware-only fixes.
Oxford Ionics' Electronic Qubit Control helped drive that result by adding microwave antennas to IonQ chips, improving stability and shrinking system size for eventual commercialization.
Quantinuum also reported strong trapped-ion accuracy—99.9975% for 1-qubit gates and 99.92% for 2-qubit gates—while sticking with laser-based gates rather than embedded microwave controls.
Both companies are betting on trapped-ion systems because they currently deliver some of the best quantum accuracy, though the technology remains far from classical chip reliability, with conventional error rates below 1 in a quadrillion.